Advertisements I have a similar story and perhaps a solution (that so far is working for me). I too was having an issue of where my S3, dual M-Card (yes multi not single) dropping channels and then sometimes they came back. The pattern was odd... one time one of my cards was not getting channels while the other one was... recently both cards were dropping about 50 channels all over the place some HD some SD some premium etc. So an already long story short, had the cable guy come out and he through the problem was that my signal was too "amplified" and that using "snap on cables" versus screw on cables was causing problems. I had an amplifier on the line that was bidirectional from Radio Shack, removed that from the line, removed an unused splitter and replaced the snap on coaxial cables, and then... every channel is back... nothing else done... nothing with the cable cards... I no phone calls to reset the cable cards... needless to say I was very surprised. When I asked him why he thought that this would fix the problem, he said that non-"Comcast" amplifiers would amplify incorrect spectrum's of signal, and that this could cause channels to drop from time to time at random times and might cause cable modems to drop for brief periods as well... to be honest I am not sure if I believe it, but it sure enough no problems since... it has worked for the last 4 days... Any one having this problem have amplifier/bad wire issues that might explain their issue?